4" (100 mm), 45 Ohm Voice Range Speaker

Part #
Built to Order
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A specialized, all-weather replacement speaker for your voice applications! The DC4WI-45A is an ideal speaker for communication systems in need of a 45 ohm driver. Dual lug terminals allow for multiple connection options. This driver sports an acrylic treated cloth cone that prevents moisture absorption from rain and high humidity.

  • Voice Range Driver
  • 4” (100 mm) Diameter
  • 4 Watts, 45 Ohms
  • Acrylic Treated Cloth Cone
  • 83 dB SPL

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More Information
Height 1.5000
Width 4.1000
Length 4.1000
Speaker Type Voice
Shape of Speaker Square
Size, Nominal (inch & mm) 4" (102 mm)
Environment Outdoor / Indoor
Application Voice Communications
RoHS Compliant No
Rated impedance (Ω) 45
Rated Power IEC268-5 (W) 4 Watts
Power, Program (W) 8
Sensitivity (dB SPL) ¹ 83
Frequency range (Hz) 200 - 6k
DC resistance (Re) (Ω) 45
Resonant Frequency (Fs) (Hz) 280
Nominal Impedance (Z) (Ω) 45
Total Q factor (Qts) 2.3
Basket type Stamped Steel
Terminal size 5.2 x 0.5
Voice coil diameter (mm) 17.8
Voice coil wire material High Temperature Copper
Voice coil former material Aluminum
Magnet Material Ferrite
Magnet weight (gm) 68.04
Cone body material Acrylic Treated Cloth
Cone surround material Treated Cloth
Spider Material Cotton
Dust cap material Felt
Net weight (kg) 0.251
Technical Notes

¹ Sensitivity is measured with 2.83 volt input, measured on-axis at 1 meter distance